CN107293828A - A kind of low intermodulation hilted broadsword eight throws coaxial electric mechanical switch - Google Patents
A kind of low intermodulation hilted broadsword eight throws coaxial electric mechanical switch Download PDFInfo
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- CN107293828A CN107293828A CN201710662081.5A CN201710662081A CN107293828A CN 107293828 A CN107293828 A CN 107293828A CN 201710662081 A CN201710662081 A CN 201710662081A CN 107293828 A CN107293828 A CN 107293828A
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- China
- Prior art keywords
- radio frequency
- outer conductor
- mechanical switch
- electric mechanical
- hilted broadsword
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/10—Auxiliary devices for switching or interrupting
- H01P1/12—Auxiliary devices for switching or interrupting by mechanical chopper
- H01P1/125—Coaxial switches
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- Push-Button Switches (AREA)
Abstract
The present invention proposes a kind of low intermodulation hilted broadsword eight and throws coaxial electric mechanical switch, and it includes：Connector assembly and outer conductor component, connector assembly include：Radio frequency cavity, chamber lid, it is arranged at radio frequency spring assembly and reseting leaf that chamber is covered, chamber lid is arranged on radio frequency cavity, reseting leaf connects radio frequency spring assembly, radio frequency spring assembly includes radio frequency reed and push rod, conductor assembly includes outer conductor, inner wire and medium support, medium is supportted and push rod is respectively the support of polyetheramides medium and polyetheramides push rod, and inner wire and radio frequency reed include the Gold plated Layer on plating silver layer and silver layer, add the wearability and corrosion resistance of connector assembly respectively.Low intermodulation hilted broadsword eight in the technical program throws coaxial electric mechanical switch, and plating silver layer is more beneficial for signal and transmitted in conductive surface, light weight.
Description
Technical field
The present invention relates to electric mechanical switch field, more particularly to a kind of low intermodulation hilted broadsword eight throws coaxial electric mechanical switch.
Background technology
RF coaxial electric mechanical switch be it is a kind of by voltage control electromagnetic relay so as to realize radio frequency path switch it is micro-
Parts for wave, it almost transmits microwave signal without distortions.RF coaxial electric mechanical switch is the important component for realizing communication automation system,
Play the effect of signal route.
In the last few years, with the development of the communication technology, communication user and communication data increase in geometry speed, channel capacity
It is continuously increased, carrier power is also being incremented by, and the raising of receiving system sensitivity in a radio communications system, is particularly moved
The problem of industry, intermodulation product, increasingly perplexs engineer.
When multichannel (more than 1 tunnel) signal is by coaxial switch radio-frequency channel, it can be produced in from zero to infinitely great frequency spectrum
Raw harmonic wave and intermodulation.The device of absolute linearity will not produce distorted signals, but this is only existed in the inference of mathematics, in fact, appointing
All there is necessarily non-linear in what passive device, in nonlinear channel, except the channelized frequencies signal of input in output signal,
Also have some intermodulation products.When the frequency of intermodulation product is being received in channel, it is mutual that any wave filter all filters out these without ripple
Adjust.If these signals are sufficiently large for signal is received, it will the docking collection of letters number causes to have a strong impact on.Passive device
The conventional test stone of performance is third order intermodulation (PIM3), and PIM3 is lower, and performance is better.
Traditional RF coaxial electric mechanical switch is designed without low intermodulation, and outer conductor material uses stainless steel, and electroplating technology is plating
Nickel, inner wire and radio frequency reed use beryllium-bronze or tin-phosphor bronze, and electroplating technology is that nickel bottoming is gold-plated, and cavity and cover plate use aluminium
Alloy, electroplating technology is nickel plating.Because nickel is ferromagnetic material, in mobile communication system, signal work(particularly in radio-frequency channel
When rate is larger, Intermodulation Interference is particularly evident.
Preferable low intermodulation performance is realized in current engineering by using material and electroplating technology.It is domestic temporary without low intermodulation
The successful case of RF coaxial electric mechanical switch.Some producers realize low intermodulation radio frequency running fire device.The outer conductor of RF device, which is used, to be contained
The less diamagnetic brass of iron, electroplating technology be first thickness of coated copper layer be 0.5~2 μm, silver coating thickness be 5~7 μm, plating ternary is closed
Golden thickness is 5~7 μm；Inner wire uses beryllium-bronze or tin bronze, and electroplating technology is silver-plated, and silver thickness is 7~10 μm.
Because the reed and inner wire of RF coaxial electric mechanical switch pass through the closed and disconnected of hundred times, the wearability ratio of silver layer
It is poor, it is difficult to realize life-span of million times.The density of other copper：8.5~8.8 × 103kg/m3, the density of aluminium：2.7×103kg/
m3, the weight of identical parts, using copper material be aluminium three times it is many, the price of copper is also higher than aluminium many in addition, thus greatly
The weight and cost of big increase device.
The content of the invention
The problem of in order to solve the above, the present invention proposes a kind of low intermodulation hilted broadsword eight and throws coaxial electric mechanical switch.
The technical proposal of the invention is realized in this way：
A kind of low intermodulation hilted broadsword eight of the present invention throws coaxial electric mechanical switch, in off working state, at all paths
In off-state, in working condition, signal is inputted from intermediate connector as needed, around selection in eight tunnels wherein all the way
Output is into part to be measured.
Coaxial electric mechanical switch is thrown the invention discloses a kind of low intermodulation hilted broadsword eight, it includes：Connector assembly and connection institute
The outer conductor component of connector assembly is stated, the connector assembly includes：Radio frequency cavity, chamber lid, it is arranged at what the chamber was covered
Radio frequency spring assembly and reseting leaf, the chamber lid are arranged on the radio frequency cavity, and the reseting leaf connects the radio frequency
Spring assembly, the radio frequency spring assembly includes the push rod of radio frequency reed and the connection radio frequency reed, the outer conductor component
Including the medium support between outer conductor, inner wire and the connection outer conductor and inner wire, medium support and push rod are respectively polyethers
Acid amides medium is supportted and polyetheramides push rod, and inner wire and the radio frequency reed is respectively including gold-plated on plating silver layer and silver layer
Layer, adds the wearability and corrosion resistance of the connector assembly.
Further, inner wire and radio frequency reed the plating silver thickness：10~12 μm, the electric plated thickness：
1.5~2 μm, the thickness can meet the Kelvin effect of radiofrequency signal for 10~12 μm of silver layer.
Further, the outer conductor is the outer conductor of basis brass material, the reseting leaf, inner wire and radio frequency spring
Piece is respectively beryllium-bronze reseting leaf, beryllium-bronze inner wire and beryllium-bronze radio frequency reed.
Further, the outer conductor includes the ternary alloy layer on plating silver layer and the silver coating.
Further, the silver coating thickness of the outer conductor：10~12 μm, the ternary alloy three-partalloy thickness on the silver coating
Degree：3~5 μm.
Further, outer conductor component includes being arranged at the first outer conductor of the radio frequency chamber central and along the radio frequency
One week the equally distributed second to the 9th outer conductor in cavity edge.
A kind of low intermodulation hilted broadsword eight for implementing the present invention throws coaxial electric mechanical switch, with following beneficial technique effect：
1. due to having Kelvin effect in radiofrequency signal, inner wire and radio frequency reed plating silver layer are more beneficial for signal and led
Transmit in body surface face.
2. aluminium alloy radio frequency cavity and aluminium alloy chamber lid replace diamagnetic brass using aluminum alloy materials, the weight of device is reduced
Amount.
3. inner wire and radio frequency reed use electroplating technology, silver coating thickness：It is 10~12 μm, then gold-plated again, its thickness：
1.5~2 μm, wearability and corrosion resistance are increased using electroplating technology.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also
To obtain other accompanying drawings according to these accompanying drawings.
Fig. 1 is that a kind of low intermodulation hilted broadsword eight of embodiments of the invention throws the structural representation of coaxial electric mechanical switch；
Fig. 2 is that a kind of low intermodulation hilted broadsword eight of embodiments of the invention throws showing for the radio frequency spring assembly of coaxial electric mechanical switch
It is intended to；
Fig. 3 is the schematic diagram that a kind of low intermodulation hilted broadsword eight of embodiments of the invention throws the outer conductor of coaxial electric mechanical switch.
Fig. 4 is that the hilted broadsword eight of traditional handicraft throws the intermodulation index test curve map of coaxial electric mechanical switch.
Fig. 5 is that a kind of low intermodulation hilted broadsword eight of embodiments of the invention throws the intermodulation index test curve of coaxial electric mechanical switch
Figure.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Fig. 1, Fig. 2 and Fig. 3 are referred to, coaxial electromechanics is thrown The embodiment provides a kind of low intermodulation hilted broadsword eight and opens
Close, it includes：Connector assembly 1 and the outer conductor component 2 for connecting connector assembly 1, connector assembly 1 include：Radio frequency cavity
11st, chamber lid 12, the radio frequency spring assembly 13 and reseting leaf 14 that are arranged on chamber lid 12, chamber lid 12 are arranged at radio frequency cavity 11
On, the connection radio frequency of reseting leaf 14 spring assembly 13, radio frequency spring assembly 13 includes radio frequency reed 131 and connection radio frequency reed
131 push rod 132, outer conductor component 2 includes Jie between outer conductor 21, inner wire 22 and connection outer conductor 21 and inner wire 22
Matter support 23, medium support 23 and push rod 132 are respectively the support of polyetheramides medium and polyetheramides push rod, inner wire 22 and radio frequency reed
131 include the Gold plated Layer on plating silver layer and silver layer respectively, and Gold plated Layer adds the wearability of connector assembly 1 and corrosion-resistant
Property.
Inner wire 22 and 10~12 μm of the silver thickness of plating of radio frequency reed 131, electric plated thickness：1.5~2 μm, thickness
The Kelvin effect of radio signal transmission can be met for 10~12 μm of silver layers.
Outer conductor 21 is the outer conductor of brass material, and reseting leaf 14, inner wire 22 and radio frequency reed 131 are respectively that beryllium is blue or green
Copper reseting leaf, beryllium-bronze inner wire and beryllium-bronze radio frequency reed.
Radio frequency cavity 11 and chamber lid 12 are respectively aluminium alloy radio frequency cavity and aluminium alloy chamber lid, and outer conductor 21 includes electrosilvering
Ternary alloy layer on layer and silver coating.
The silver coating thickness of outer conductor 21:10~12 μm, the ternary alloy layer thickness on silver coating:3~5 μm.
Outer conductor component 2 includes the first outer conductor for being arranged at the center of radio frequency cavity 11 and along 11 edge of radio frequency cavity one week
Equally distributed second to the 9th outer conductor
Further illustrate：
The low intermodulation hilted broadsword eight that the present invention is designed throws coaxial electric mechanical switch, and it includes：Connector assembly, radio frequency reed group
Part, reseting leaf, radio frequency cavity and chamber lid composition.Outer conductor component includes outer conductor, inner wire and medium support, radio frequency reed group
Part includes radio frequency reed and push rod.Outer conductor material is basis brass, and reseting leaf, inner wire and radio frequency reed material use beryllium
Bronze, radio frequency cavity and chamber lid use aluminium alloy, and medium support and push rod material use PEI.
Outer conductor plating thickness of the present invention is 10~12 μm of silver layers, and thickness is 3~5 μm of ternary alloy layers, inner wire and
Radio frequency reed plating thickness is 10~12 μm of silver layers, the gold of 1.5~2 μ m thicks, radio frequency cavity 11 and the plating thickness of chamber lid 12
Degree：10~12 μm of silver layers, and be passivated.
Due to having Kelvin effect in radiofrequency signal, signal is transmitted in conductive surface.It is transmitted shown in depth such as formula (1)：
Wherein, ρ is relative conductivity, and unit is Ω/m, and f is frequency, and unit is Hz, and μ is conductor absolute permeability, definitely
Magnetic permeability μ is as shown in formula 2：
μ=μ0×μr (2)
Wherein μ0=4 π × 10-7H/m。
Therefore the electric mechanical switch low frequency that need to only design the present invention of radio-frequency channel can be obtained since 45MHz by formula (1)
Go out skin depth for 9.5 μm, therefore the plating silver layer more than 10 μm can meet the Kelvin effect of radiofrequency signal.
Using the low cross modulation test system of Nanjing nanotesla as tester, two carrier powers are 20W (43dBm), frequency
(F) it is 849~889MHz, test pattern is frequency sweep mode, and X-axis unit is：MHz, Y-axis unit is：dBc.
Referring to Fig. 4, F1 is incremented by from 869.0MHz to 871.5MHz, F2 fixes 894.0MHz；
F2 successively decreases from 894.0MHz to 889.0MHz, and F1 fixes 869.0MHz；
Cursor 1:844.0MHz, -107.70dBc (869.0,894.0MHz)；
Cursor 2:849.0MHz, -107.95dBc (869.0,889.0MHz)；
Test result：The hilted broadsword eight of traditional handicraft throws coaxial electric mechanical switch third order intermodulation (PIM3) for -107.70dBc.
Referring to Fig. 5, F1 is incremented by from 869.0MHz to 871.5MHz, F2 fixes 894.0MHz；
F2 successively decreases from 894.0MHz to 889.0MHz, and F1 fixes 869.0MHz；
Cursor 1:846.0MHz, -153.22dBc (870.0,894.0MHz)；
Cursor 2:847.0MHz, -153.98dBc (869.0,891.0MHz)；
Test result：The low intermodulation hilted broadsword eight of the present invention throws same electric mechanical switch third order intermodulation (PIM3) for -153.22dBc.
Fig. 4 and Fig. 5 is referred to, the conventional test stone of passive device performance is third order intermodulation (PIM3), and PIM3 is lower, property
Can be better.Hilted broadsword eight designed by the present invention throws same electric mechanical switch third order intermodulation (PIM3) and is substantially less than tradition for -153.22dBc
Technique hilted broadsword eight throws coaxial electric mechanical switch third order intermodulation (PIM3) for -107.70dBc, and therefore, hilted broadsword eight of the invention throws same machine
There is electric switch obvious technology to improve.
A kind of low intermodulation hilted broadsword eight for implementing the present invention throws coaxial electric mechanical switch, with following beneficial technique effect：
1. due to having Kelvin effect in radiofrequency signal, inner wire and radio frequency reed plating silver layer are more beneficial for signal and led
Transmit in body surface face.
2. aluminium alloy radio frequency cavity and aluminium alloy chamber lid replace diamagnetic brass using aluminum alloy materials, the weight of device is reduced
Amount.
3. inner wire and radio frequency reed use electroplating technology, silver coating thickness：It is 10~12 μm, then gold-plated again, its thickness：
1.5~2 μm, wearability and corrosion resistance are increased using electroplating technology.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God is with principle, and any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.
Claims (6)
1. a kind of low intermodulation hilted broadsword eight throws coaxial electric mechanical switch, including：Connector assembly and the connection connector assembly it is outer
Conductor assembly, the connector assembly includes：Radio frequency cavity, chamber lid, it is arranged at radio frequency spring assembly that the chamber covers and multiple
Position reed, the chamber lid is arranged on the radio frequency cavity, and the reseting leaf connects the radio frequency spring assembly, the radio frequency
Spring assembly includes the push rod of radio frequency reed and the connection radio frequency reed, and the outer conductor component includes outer conductor, inner wire
And the medium support between the connection outer conductor and inner wire, it is characterised in that the medium is supportted and push rod is respectively polyethers acyl
Amine medium support and polyetheramides push rod, inner wire and the radio frequency reed respectively include plating silver layer and described plating silver layer it
On Gold plated Layer.
2. low intermodulation hilted broadsword eight according to claim 1 throws coaxial electric mechanical switch, it is characterised in that the inner wire and penetrate
Frequency reed electroplates silver thickness：10~12 μm, the plated thickness is：1.5~2 μm.
3. low intermodulation hilted broadsword eight according to claim 1 throws coaxial electric mechanical switch, it is characterised in that the outer conductor is general
The outer conductor of logical brass material, the reseting leaf, inner wire and radio frequency reed are respectively beryllium-bronze reseting leaf, in beryllium-bronze
Conductor and beryllium-bronze radio frequency reed.
4. low intermodulation hilted broadsword eight according to claim 1 throws coaxial electric mechanical switch, it is characterised in that the outer conductor includes
Electroplate the ternary alloy layer on silver layer and the silver coating.
5. low intermodulation hilted broadsword eight according to claim 3 throws coaxial electric mechanical switch, it is characterised in that the plating of the outer conductor
Silver thickness：10~12 μm, the ternary alloy layer thickness on the silver coating：3~5 μm.
6. low intermodulation hilted broadsword eight according to claim 1 throws coaxial electric mechanical switch, it is characterised in that the outer conductor component
Including being arranged at the first outer conductor of the radio frequency chamber central and along the radio frequency cavity edge one week equally distributed second
To the 9th outer conductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710662081.5A CN107293828A (en) | 2017-08-04 | 2017-08-04 | A kind of low intermodulation hilted broadsword eight throws coaxial electric mechanical switch |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710662081.5A CN107293828A (en) | 2017-08-04 | 2017-08-04 | A kind of low intermodulation hilted broadsword eight throws coaxial electric mechanical switch |
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| Publication Number | Publication Date |
|---|---|
| CN107293828A true CN107293828A (en) | 2017-10-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710662081.5A Pending CN107293828A (en) | 2017-08-04 | 2017-08-04 | A kind of low intermodulation hilted broadsword eight throws coaxial electric mechanical switch |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108682570A (en) * | 2018-05-23 | 2018-10-19 | 中国电子科技集团公司第四十研究所 | A kind of coaxial switch open type transmission mechanism and hilted broadsword ten throw RF coaxial switch |
| CN110349812A (en) * | 2019-07-18 | 2019-10-18 | 中电科仪器仪表有限公司 | A kind of relay system and open type hilted broadsword four-throw RF coaxial switch |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080283379A1 (en) * | 2007-05-18 | 2008-11-20 | Teledyne Technologies Incorporated | Coaxial switch with reduced tribo-electric charge accumulation |
-
2017
- 2017-08-04 CN CN201710662081.5A patent/CN107293828A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080283379A1 (en) * | 2007-05-18 | 2008-11-20 | Teledyne Technologies Incorporated | Coaxial switch with reduced tribo-electric charge accumulation |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108682570A (en) * | 2018-05-23 | 2018-10-19 | 中国电子科技集团公司第四十研究所 | A kind of coaxial switch open type transmission mechanism and hilted broadsword ten throw RF coaxial switch |
| CN110349812A (en) * | 2019-07-18 | 2019-10-18 | 中电科仪器仪表有限公司 | A kind of relay system and open type hilted broadsword four-throw RF coaxial switch |
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Application publication date: 20171024 |
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